File list (Check if you may need any files):
Common_Callback_CSharp
......................\App_Code
......................\........\CustomTool.cs
......................\Common_Callback_CSharp2005.sln
......................\Common_Callback_CSharp2005.suo
......................\Common_Callback_CSharp2008.sln
......................\Default.aspx
......................\Default.aspx.cs
......................\SimpleCallback.aspx
......................\SimpleCallback.aspx.cs
......................\Web.Config
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